33 citations · 70 across the 7 of their papers we have counts for
7 papers
Computing the luminosity distance via optimal homotopy perturbation method
Bo Yu, Zi-Hua Wang, De-Zi Liu +1
We propose a new algorithm for computing the luminosity distance in the flat universe with a cosmological constant based on Shchigolev's homotopy perturbation method, where the opt…
New Generalizations of Cosmography Inspired by the Pade Approximant
Ya-Nan Zhou, De-Zi Liu, Xiao-Bo Zou +1
The current accelerated expansion of the universe has been one of the most important fields in physics and astronomy since 1998. Many cosmological models have been proposed in the…
Age Problem in Lemaitre-Tolman-Bondi Void Models
Xiao-Peng Yan, De-Zi Liu, Hao Wei
As is well known, one can explain the current cosmic acceleration by considering an inhomogeneous and/or anisotropic universe (which violates the cosmological principle), without i…
Preliminary Application of Reinsch Splines to Cosmology: Transition Redshift Determination with Simulated OHD
De-Zi Liu, Shuo Yuan, Yu Lu +1
Many schemes have been proposed to perform a model-independent constraint on cosmological dynamics, such as nonparametric dark energy equation of state (EoS) ω(z) or the decelerati…
Quadrature algorithms to the luminosity distance with a time-dependent dark energy model
Nan-Nan Yue, De-Zi Liu, Xiao-Xing Pei +3
In our previous work, we have proposed two methods for computing the luminosity distance d_{L}^Λ in LCDM model. In this paper, two effective quadrature algorithms, known as Romberg…
A Series Solution to the Luminosity Distance in a Flat LCDM Universe
De-Zi Liu, Nan-Nan Yue, Xiao-Lei Meng +2
Cosmological observations indicate that our universe is flat and dark energy (DE) dominated at present. The luminosity distance plays an important role in the investigation of the…
Numerical Strategies of Computing the Luminosity Distance
De-Zi Liu, Cong Ma, Tong-Jie Zhang +1
We propose two efficient numerical methods of evaluating the luminosity distance in the spatially flat ΛCDM universe. The first method is based on the Carlson symmetric form of ell…